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2017年6月1日美国宣布退出《巴黎协定》,而中国此时宣布将继续履行承诺。据悉国家科技部已经批复的《面向2030重大科技项目——煤炭清洁高效利用》,明确将CCS(二氧化碳捕集与地质封存)作为未来煤炭清洁高效发展的重要方向。在CCS技术路线中尤其以咸水层封存具备的封存潜力最大,而适合咸水层封存的适宜场地大部分分布在低孔低渗陆相沉积盆地中,因此探索在低孔低渗咸水层中注入封存CO_2具有重要的示范和探索意义。神华CCS示范项目于2015年顺利完成在低孔低渗咸水层中注入封存30万吨CO_2的任务,突破了低孔低渗咸水层封存CO_2的技术瓶颈,不仅根据地质特征开发了新的封存工艺,还在示范过程中认识到了超临界CO_2在不同空隙结构中的渗透能力,对类似低孔低渗咸水层实施CCS项目具有较高的借鉴意义。
On June 1, 2017, the United States announced its withdrawal from the “Paris Agreement,” and China announced at this time that it will continue to honor its commitments. It is reported that Ministry of Science and Technology has approved “for 2030 major science and technology projects - clean and efficient use of coal,” Clearly CCS (carbon dioxide capture and geological storage) as an important direction for the future development of clean and efficient coal. In the CCS technical route, sequestration with salt water layer has the largest storage potential, and suitable sites suitable for storage of salt water layer are mostly distributed in low porosity and low permeability continental sedimentary basins. Therefore, In the injection of CO_2 storage has important demonstration and exploration significance. The Shenhua CCS demonstration project successfully completed the task of injecting and sequestering 300,000 tons of CO 2 into the low-porosity and low-permeability saline aquifer in 2015, breaking through the technical bottleneck of sequestering CO_2 in low-porosity and low-permeability saline aquifers. Not only the new Sealing process, but also in the demonstration process to recognize the supercritical CO_2 in different pore structure of the permeability of similar low-porosity and low-permeability saline aqueduct CCS project has a higher reference.